Hydraulic spudder



1 Feb.21,193`8.' H. PEARSALL 1,898,684

HYDRAULI C S PUDDER Filed March 30, 1952 2 Sheets-Sheet l /0 I nvenlor ltorney Feb.21,1933. H PEARSALL 1,898,684

HYDRAULIC SPUDDER Filed March 50, 1932 2 Sheets-Sheet 2 Inventor f1 Homey Patented Feb. 2l, 1933 UNITED STATES HAROLD PEARSALL, OF HEATING SUMMIT, PENNSYLVANIA HYDRAULIC SPUDDER Application filed March 30, 1932. Serial No.- 02,036.

This invention relates to a hydraulic spudder, the general object of the invention being to provide a cylinder at the top of the i mastof the device provided with a piston which carries a pulley and a connection with a pump, the reciprocatory motion of which forces liquid into the cylinder and with draws the liquid therefrom so that the piston is given a reciprocatory movement to raise and lower the pulley and the cable which passes thereover.

This invention also consists in certain other features of construction and in the combination and arrangement of the several parts l5 to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing the invention in detail reference will be had to the accompanying drawings wherein like characters denote like or correspondin` parts throughout the several views, and in which Figure 1 is an elevation showing one manner of carrying out the invention.

Fig. f2 is a side view of the device.

Fig. 3 is a sectional view through the pump cylinder and piston with the connecting means in elevation.

Fig. 4 is a sectional view through the hydraulic cylinder with its piston and pulley in elevation.

In these drawings, the letter A indicates the mast and the numeral 1 indicates vthe vertically arranged cylinder supported at the top of the mast and containing a piston 2 which extends upwardly and is formed with a forked end 3 which rotatably supports a pulley 4 over which the cable 5 passes.

A sleeve 1 is slidably arranged in the cyllo inder and receives the piston and a spring 6 is located in the closed bottom of the sleeve and acts as a cushion for the piston. A pipe 7 connects the bottom of the cylinder with the bottom of a pump cylinder 8, the piston E of which is shown at 9. The piston rod 10 is connected to the crank 11 of a shaft 12 vrotatably supported in the lower part of the mast and having a combined fly wheel and :o belt wheel 13 attached to its opposite end.

o 'A suitable liquid is used for transmitting the movement of the pump piston to the piston 2 and thus the operation of thepump will reciprocate the piston and sleeve in the cylinder 1 so that the pulley 4 lis raised and lowf ered during the operation of the pump.

The pump can be operated from any suitable source of power by a belt passing over the wheel 13 and this wheel acts as a fly wheel to counterbalance the pump and the;VV movable pulley t and eliminates the use of 0 the usual walking beam and the temper screw.

The sand reel is shown at 14 and the drum or bull wheel is shown at 15 to which the cable is attached. The members 14 and 15 b5 may be driven from the shaft 12 through the friction wheels 16. A relief valve 17 may be placed in the fluid line to prevent breakage of rope or equipment in case the drilling tool fr sticks. In case of standard rigs an inverted 0 pulley can be used.

With the use of this device there is less wear on the line as the line goes through but one pulley instead of three, and there are 'l no clamps to ruin the line and the parts are fewer and lighter than those now in use.

The device also saves time as there is no hooking or unhooking of the lines to the walking beam, and the tool may be pulledout quickly. The coiled spring and the sleeve in the hydraulic cylinder softens the shock on the line when drilling, so that aV wire cable can be used exclusively. The air pressure in the fluid line also assists in elim- 'Sr inating jars. The tools do not need to be o pulled out until they get muddy. The pulley piston motion is one-half of the tool motion.

The arrangement of the enclosed spring @'90 takes .care of drilling with wire line as the weight is carried by the spring throughout the drilling stroke.

It is thought from the foregoing description that the advantages and novel features of the invention will be readily apparent.

It is to be understood that changes may be made in the construction and inthe combination and arrangement of the several parts provided that such changes fall within the scope of the appended claim.

Having thus described my invention, what I claim as new is In a device of the class described, a mast, a cylinder supported at the upper end thereof, said cylinder having its upper end open and its lower end closed, a sleeve slidably arranged in the cylinder having its upper end open and its lower end closed, a piston having its lower part fitting in the sleeve and its upper end forked, a pulley carried by the forked end of the piston, a spring in the lower part of the sleeve on which the lower end of the piston rests, a pump, a conduit connecting the pump with the lower end of the cylinder, a. drum rotatably supported by the lower part of the mast, a cable having one end connected with the drum and said cable passing over the pulley and actuating means for the drum and the pump.

' In testimony whereof I affix my signature.

HAROLD PEARSALL. 

